The US has due process, judicial transparency, and free speech. There are still rich people that operate above the system, but they're largely still accountable and the free press can crucify them.
Authoritarian regimes have execution vans, no freedom of the press, no free speech, and a paranoid leadership that will jail or kill anyone who threatens their power. They lock citizens inside and prohibit capital flight.
No system is perfect, but democracy is strictly better.
I love China and the Chinese people, but the CCP is a drag on both.
I'm no fan of the party in power in the US, but I can campaign and speak out against them. I can raise money to oppose them. I can band together with like minded individuals to protest. That's superior to unilateral oppression.